Electric twin flow pump apparatus

Abstract

An electric twin flow pump apparatus configured to include a housing wherein a transmission oil passage and a water jacket are separately formed; a motor wherein one side of the housing is mounted and its drive shaft passes through the oil passage and water jacket and extends to the other side of the housing; a first impeller that is coaxially secured at the drive shaft and located in the water jacket path; and a second impeller that is coaxially secured at the drive shaft and located in the oil passage so as to provide a twin flow pump that has formed an electric oil pump and an electric water pump as one body.

1 . An electric twin flow pump apparatus, comprising: 
 a housing wherein a transmission oil passage and a water jacket are separately formed;    a motor wherein one side of the housing is mounted with a drive shaft passing through the oil passage and water jacket and extending to an opposite side of the housing;    a first impeller that is coaxially secured on the drive shaft and located in the water jacket; and    a second impeller that is coaxially secured on the drive shaft and located in the oil passage.    
   
   
       2 . The electric twin flow pump apparatus according to  claim 1 , wherein the motor is driven if the temperature of the cooling water exceeds a temperature setting or if an associated engine is in the idle stop mode.  
   
   
       3 . The electric twin flow pump apparatus according to  claim 2 , wherein bearings are further included in the opposite side of the housing that supports the drive shaft.  
   
   
       4 . The electric twin flow pump apparatus according to  claim 3 , wherein one or more sealing members are furnished in the housing.  
   
   
       5 . The electric twin flow pump apparatus according to  claim 4 , wherein the motor is furnished as a DC motor.  
   
   
       6 . An electric twin flow pump apparatus, comprising: 
 a housing wherein a transmission oil passage and a water jacket are separately formed;    a motor interposed between the oil passage and the water jacket and mounted at the housing with a drive shaft passing through the oil passage and the water jacket and extending to both ends of the housing;    a first impeller that is coaxially secured on the drive shaft and located in the said water jacket; and    a second impeller that is coaxially secured on the drive shaft and located in the oil passage.    
   
   
       7 . The electric twin flow pump apparatus according to  claim 6 , wherein the motor is driven if the temperature of the cooling water exceeds a temperature setting or if an associated engine is in the idle stop mode.  
   
   
       8 . The electric twin flow pump apparatus according to  claim 7 , wherein bearings are further included that support the drive shaft of the motor to enable its rotation at both ends of the housing.  
   
   
       9 . The electric twin flow pump apparatus according to  claim 8 , wherein one or more sealing members are furnished in the housing.  
   
   
       10 . The electric twin flow pump apparatus according to  claim 9 , wherein the motor is furnished as a DC motor.  
   
   
       11 . An electric twin flow pump apparatus, comprising: 
 a housing including separately a formed transmission oil passage and water jacket, wherein said oil passage and water jacket each define an impeller chamber formed around a common axis;    a first impeller disposed in the water jacket impeller chamber configured and dimensioned for pumping water;    a second impeller disposed in the oil passage impeller chamber configured and dimensioned for pumping transmission oil;    at least one drive shaft extending between said impellers along said common axis for driving said impellers; and    a motor operatively connected to said at least one drive shaft.    
   
   
       12 . The pump apparatus of  claim 11 , wherein said motor is disposed to one side of said housing and a single drive shaft extends from the motor through one impeller to the other impeller.  
   
   
       13 . The pump apparatus of  claim 12 , further comprising a shaft supporting bearing mounted on the housing opposite said motor.  
   
   
       14 . The pump apparatus of  claim 11 , wherein said motor is disposed between said impeller chambers and drive shafts extend from opposite sides of the motor to the first and second impellers.  
   
   
       15 . The pump apparatus of  claim 14 , further comprising first and second shaft supporting bearings mounted on opposite sides of said impeller chambers from said motor.